Food is definately the key. Right now deer need to eat to stay warm. As MB said,the bucks are run down from rutting. They will be looking to put on some fat. I've found that deer will go farther to a good food source than earlier in the year. If you hunt field edges you may see nothing, but there'll be fresh tracks every day. You need to backtrack to where the beddding area is. Hunt close to that.